Which type of sling is prohibited in the presence of acid or phenolic vapors?

Nylon web slings are prohibited in the presence of acid or phenolic vapors due to their chemical composition. Nylon, being a type of synthetic fiber, is susceptible to degradation when exposed to harsh chemicals, including acids and phenolic compounds. The presence of these vapors can lead to a breakdown of the material, weakening the sling and posing significant safety risks, such as failure under load.

In contrast, wire rope slings, metal mesh slings, and polyester web slings have different properties that render them more resistant to chemical exposure. While polyester web slings can handle moisture and have a degree of chemical resistance, they are not as vulnerable to acid or phenolic vapors as nylon. Metal mesh and wire rope slings, made from steel, also have a much higher resistance to chemical degradation, making them suitable for use in environments where acid vapors are present.

Understanding the compatibility of sling materials with specific chemicals is crucial for maintaining safety standards and preventing equipment failure in the workplace.